An email I sent today has been returned undelivered with the following reason "Delay reason: SMTP error from remote mail server after end of data: 421 Policy (184.108.40.206) Too much SPAM received from 220.127.116.11 on 2018/12/02 21:20:54 GMT. If you share a mail server consider moving to a dedicated mail server not sending SPAM.
My email was not SPAM, it was a single email to my
mother. An Internet search suggested that only the server owner
can resolve this. Another thread suggested checking the IP address to
establish if it had been blocked, and my search of the IP said that it is blocked. What
can be done to resolve this?